Loom beam structure



E. UFF

LooM BEAM STRUCTURE Filed April 15, 1928 July 2s, 1931.

a rlllll 2 b Patented July 28, 1931 UNITED STATES i ERNEST UFF, OF CHESTER, PENNSYLVANIA Looivr BEAM Y Application ie April 13,

This invention relates to loom beam structures and particularly to beam heads and means for securing the same to bea-m barrels.

In a textile spool which is known in the art as a loomvbeam, it is desirable to have the inner guiding surfaces of the flanges or heads at right angles to` the axis of the barrel or shaft upon which they are fixed in order that the threads of warp forming the selvages of the resultant fabric may be maintained in the same state of tension throughout the entire vweaving operation. This was not always possible in the prior art for the 'very means or operation employedto secure the headlusually mutilated the beam barrel and produced irregularities therein.

warped at its juncture with the head or flange, thus causing the head to lean at an oblique angle thereto.

V One of the objects of my invention is to entirely eliminate the above mentioned de- .f fects of the prior Yart vand at the same time to produce a flange which may be easily fixed in position at` any part lengthwise of the barrel and as readily be adjusted so that its inner radial surface may be maintained at all times at right angles to the axis re gardless of any irregularity in tlievperipheral surface of the barrel.

A further object is to provide a flange which may be quickly adjusted on shafts if.. differing considerably in diameter without making any structural changes and without the use of wedges or other usual mechanical expedients.

A still further object is to produce a flange c lwhich may be securely and tightly clamped to a hollow beam barrel made of a material having a comparatively small resistance to radial stresses.

Yet another object is to provide means to reenforce such a beam barrel to eliminate itsv tendency to rupture or collapse at its juncture with theflange. With these and other objects in view, important andhighly desirable though not entirely indispensable features of my inven- Furthermore if'the barrelwas of wood, it had a tendency to shrink or become STRUCTURE 1928. Serial No. 269,754.

tion relate tothe provision of a hollow beam v tmoresecurely clamp thebarrel and the head I together.

My invention further relates to arrangements and combinations of parts which will be hereinafter Vsetforth. and'. more particularly pointed out intheappended claim.

I have' illustrated a, simple embodiment of my invention in the accompanying drawings` in which Figure l is a section Vonline 1.-loffFi'gure 2, showing the details o'fcons'ti'uction of the beam head and lits clamping action on the beam barrel. j

VFigure 2 isa front elevation of one enjdf" of the beam structure and showing thebeamk head in section on l1ne'2--f2 of Figure l.

Figure 3 is a perspective view of acylindrieal reenforcing block, one end being shown in section. y

My improved device as shown in Figure 1 consists of an'end flange or disk lhaving a"4 central aperture 2 to receive a beam barrel,

roll or shaft 3. .The end flange is preferably of steel though it would not constitute a de parture from my invention tomake it of `another suitable metal or even of wood or of other material.

Fastened to said end flange by means of l the conventional rivets 4 or other suitable attaching means is an annular casting preferably of cast iron. The castingv may, i

its periphery are alongv the circumference j offa somewhat larger circle, thusforming a iiD Y the excess be useful in keying a truly. boredhub v-to series of Vrecesses 10, 11 and 12. 'As shown in Figure 1 I prefer to cut away or to omit metal on the outer periphery of the hub between the recesses in order to save metal and lighten the structure, but it is clear that the outer periphery of the hub mioht well be circular.

pening into each one of the recesses x10, 11 and 12 is a screw threaded bore which receives a screw hreaded stud 13V on the inner end of which is mounted a radiallyii. slidable clamping block 141. The block may be fastened to the stud in any suitable man ner but in my preferred modification the stud extends through an aperture in thel block andhasits inner extremity flattened like a rivet shown atl'.

The slinable blocks have smooth, arcuate innenand .outer` peripheries which preferably .conform tothe two feircles above -re-vv ferred to so thaty when the blocks are in theirfi normal or retracted position they just fillu the recesses, yand cooperate `with the. portions 17, 8 and 9. of the hub to form a. circular aperture. This aperture may, if desired, f be madeto .register with the aperture 2 in thedisk Abut this is not-essential, nor is it.r necessary, though desirable, that. ithe aper.- 1 ture formed by the yblocks 14 andthey pore 1 tions 7, 8 and 9`o'f .the hubbe truly circular.

' The studs..13maybe providedwith reca. tangular or hexagonal heads 16s() .that-they. can-be turned. by means of awrench or other simple tool to Vbring Athe slidable blocks 14.

intoclamping.engagementwithy the.: beam roll 3.

In the drawingsI have shown lnyaimproved flange as beingprovided withfthree.- clamping. blockslequally spaced about ther. central hub'but it is evident vthat whilet'his is a very desirable and *advantageous ar-.a rangement, it is not at all necessaryfor the l:. blocks to be equally. spaced, norisfitabsolutely essentialwthat .the .blockshe =threein number. However, I do not .deem it advisableto use less than two .blocks fo'rseveral reasons, the vmostfimportant. beingrhat .une balanced stresses in thebarrel r.wouldwthus be setup and that. a single block would. only a 'truly-.turned shaft.

I have further shown the castinga to be' formed integrally with a pulley 17 .having a flange 18. The pulley mayr-serverasza driving means .for-the .beam structureor.V it maybe used rmerely as a friction ban-d-` in which casethe beam maybe vdrivendn a manner well known in the art, as, for-eX-.'- ample, by means .of :the notch. 21 .inthe-end of the beam barrel .The fbarrel may also; be provided wh a brass ferrule'for-greenV forcement, .n

Though'my improved flange-may be.l used! withany. kind: of roll) or barrel, it has :beendparticularly designed for use .witha; hollow w shaft made of a relatively frangible nonmetallic material such as compressed paper or wood pulp, paste-board, press-board, leather, or laminated paper or fabric. In such case I prefer to reenforce the hollow shaft at its juncture with the head by means of `a short .cylindrical .block of. wood, cork, metal or other suitable material. f1 The reenforcing block might well be kept in stock Vin the form of long cylinders and small sections sawedor. cut therefrom when needed. The block is preferably of smaller diameterfthan the internal diameter of the hollow barrel to provide a loose sliding fit. Of course, each en'd of the barrel is provided` withz a reenforcinglblock, 'one .for each head oriiange,4V

Although kI prefer `to .use amy.v improvedr flange witha beam barrel made of a non?. metallic mate 1ial, such. as .disclosed above, it is to..be.understood :that Ya metallic tube., would. serve .my r.purpose Vequallygas well:

. andthat, thereforeymy claim'. should notf, be@l limited in scopeas fargasfthe materialrof the.` beam barrelis concernedw.. y K

The VVAoperationl .ofv securely clamping ther. flanges,Y totheA shaftfis veryz simple .and so` obuious...that.. .it need not. .be .described in' any: detail. Suffice it -tjo.say..that- I prefer? tovelamp the. .slidable .blocksfld .so tightly I95v against. the hollow harrelthat the. .reenform ing;blockslare. no .longer slidable Within .the g barrel,V thuscausingzthe.bloekftoco-operate: withk the .hub .(5. to securely clamp' the 'barrel to the. head. j j v p VVhilenf order..to .comply .with `the stat.- utes, the invention has..been;described-iin language` :more orr less .speciicf asito. certain features,` it is to ybe. .understood that the,.in. A vention .is notzto be .limited vto any,` specific! .105 details, but that the: means .and construction herein described..comprisesbut one .illustra-:g tive imode ofwputtingrk the. invention .intos effect, andthe-invention .is therefore claimed-w broadly, ini any of .its l possible forms por. .no

modifications AWithin. thescopeof.thefrapf..,

pended claim.

I claim j Inv..combination 'with-:a .hollowwshaft or...

. beam 1 barrel of.. :frangible material .and :Ia l.115

separable 1flange.. or r head.; tightlyy clamped thereto, a cylindrical :block tightly clamped; 1

Lwithin said shaft or barrel and servingptow. prevent the col-lapse and `rupture of said.bar'

rel at .the juncture ofsaidwbarreland saidqm flange,; said cylindrical. rlblock. .being of less. r

, diameter `than the.. internal .diameterh ofthe .x

barrel so that the block is loosely.receivahlef.l withinthe .barrel when therflangeorheadds V not clamped. thereto. n l In testimony whereof .I faffixmy signature. K

`ERNEST UFF. 

